The coastal storm expected to impact Long Island Saturday could produce either significant snowfall or significant icing across the region, according to the National Weather Service.
The track of the developing coastal low pressure system remains uncertain, forecasters said. Its exact track will determine the form Saturday’s precipitation will take.
The current NWS forecast calls for the low to pass south of Long Island inside the 40/70 benchmark and, thanks to “warm air aloft” being forecast by some computer models, it may bring mixed precipitation and freezing rain rather than snow. The models are in disagreement, however, about whether upper level warm air will be a factor in the storm. The precipitation will change over to all snow Saturday evening before tapering off, according to the current forecast.
In the meanwhile, a “weakening Alberta Clipper will approach from the west tonight then wash out over the area Thursday morning as its upper level energy transfers to the developing ocean storm,” the weather service said in its forecast discussion.
And there’s likely more snowy weather heading this way on Monday and Tuesday, when “a series of weak disturbances will impact the region.”
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